Revolving adjustable equipoise-weight.



No. 632,684. Patented Sept. 5, I899.

W. D. HOOKER.

REVDLVINE ADJUSTABLE EQUIPOISE WEIGHT. (Application filed Jan. 9, 1899.)

(No Model.)

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NITED STATES PATENT OFFICE.

IVILLIAM DAVIS HOOKER, OF ST. LOUIS, MISSOURI.

REVOLVING ADJUSTABLE EQUIPOISE-WEIG HT.

SPECIFICATION forming part of Letters Patent No. 632,684, dated September 5, 1899.

Application filed January 9, 1899. Serial No. 701,682. (No model.)

To (tZZ whom it may concern:

Be it known that 1, WILLIAM DAVIS H001;- ER, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented a new and useful Revolving Adj ustable Equipoise-lVeight, of which the following is a specification.

My invention relates to improvements in revolving adjustable equipoise-weights for producingasteady even motion on unequallybalanced revolving crank-shafts, wheels, &c.

and also to provide in connection with this equipoise-weight a removable and adjustable hand-lever attachment, so that it can be revolved by hand-power when the motive power is stopped. I attain these objects by mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a belted pumphead, showing theapplication of this invention for producing an even motion on a vertical deep-well pump. Fig. 2 is a vertical section through the center of the opening in the crank-shaft on line X X, Fig. 1. Fig. 3 is a longitudinal section through the center of the removable handle on line 'y y, Fig. 1.

Similar letters refer to similar parts throughout the several views.

I have shown this improvement as applied to a belted pump-head of ordinary construction to drive the pumps placed down deepbored wells, where the weight of the pumprod varies largely, owing to the greater or less length of the pump-rods and size of the same, to accommodate all depths of wells and diameter of pump-rods. This improvement may be applied to balance unequal motion in a great variety of machinery.

A is the crank-shaft; B, the wrist-pin; G, connecting-rod; D, the right-angle opening through the crank-shaft in the plane of the center lines of the crank-shaft and the wristpin B; E, the revolving adjustable equipoiseweight; F, the arm to which the weight E is secured; G, a screw-thread on arm, running its whole length; I I, check-nuts on arm F J J, set-screws on crank-shaft A; K, a key in crank-shaft openingD,having gibbed ends; L, the removable and adjustable hand-lever; M, a gibbed key in hole in hand-lever; N, a hand-screw in the hub of hand-lever.

The crank-shaft A is shown as mounted in its hearings on the top of the pump-head, having its wrist-pin 13 near the end of the crank, which wrist-pin is connected by the connect ing-rod C to the cross-head and pump-rods to a pump in well in the usual manner. At the opposite or outer end of this crank-shaft is bored at a right angle to the crank-shaft the hole or opening D. This opening is bored in the plane of the center lines of the crankshaft and the wrist-pin. The weight E is cast onto the arm F to cheapen the cost of its manu facture. This arm has ascrew-thread Gout on its entire length, and also a groove I-I cut the whole length of this arm.

I I are check-nuts fitted to the arm for the purpose of adjusting and securing the weight E at the right distance from the crank-shaft to balance the weight of the pump-rods and crank through all variations of weights that may be found in wells.

J J are set-screws in crank-shaft to screw down onto key K in crank-shaft opening D to hold the arm F in its position firmly, so that in connection with the check nuts I I the Weight E is prevented from flying off by its centrifugal force. In practice I set this weight just as near right as possible. Then while the crank-shaft is revolving slowly I set up the check-nuts by hand in either direction, so that the weight while revolving will eX- actly balance the unequal weight of the moving parts of the machine. I then stop the machine and tighten up the check-nuts and set-screws.

The removable and adjustable handle L is cast very thin of malleable iron to make it as light as possible consistent with proper strength. It has a gibbed key M in the hole in the center of its hub, and a hand-screwN to tighten the gib securely in the groove in the arm E to prevent the handle from turning around on the arm while it is operated by hand when the motive power is stopped. This I find very desirable and convenient when a small quantity of cold water is wanted for domestic use.

I wish it to be understood that I do not limit myself to the application of this improvement to pump-heads only, as it can be applied with good results to a great variety of machines.

I am aware that revolving weights have been applied to balance crank-shafts, wheels,

check-nuts I, I, set-screws J, J, and key K,

substantially as described.

2. The combination with the crank-shaft A,

having the hole or opening D, the Weight E, its arm F, screw-threaded and grooved, checknuts I, I, set'screws J, J, key K, of the handle L, its gibbed key M, and hand-screw N, substantially as described.

ILLIAM DAVIS HOOKER.

Witnesses:

FRANK Q. HIEMENZ, CHARLES A. GEWE. 

